But the eco-system is already growing fast and users want to add even more sensors and modules. For starters check out some of these SmartThings IFTTT Recipes.

HAM Bridge, is a little Mac app that allows you to run AppleScript, Automator workflows, shell and python scripts on your Mac by sending it a simple HTTP GET request. You can use this for example to control IR devices with the Global Cache hardware.

There are several hacks to get LightwaveRF working with SmartThings too. one of them in this video..